Review
Energy & Fuels
Kai Zhang, Xianfu Zhang, Keith G. Brooks, Bin Ding, Sachin Kinge, Yong Ding, Songyuan Dai, Mohammad Khaja Nazeeruddin
Summary: Ionic liquids (ILs) have been extensively studied as additives, solvents, and interface engineering materials for improving the efficiency and stability of perovskite solar cells (PSCs). This review provides insights into the role of ILs in various aspects of PSCs and guides researchers in bulk doping and interface engineering for efficient and stable devices.
Article
Chemistry, Physical
Fei Wang, Chuang-ye Ge, Dawei Duan, Haoran Lin, Liang Li, Pance Naumov, Hanlin Hu
Summary: Perovskite solar cells have attracted attention for their high efficiency, absorption coefficients, tunability, and manufacturing protocols. However, long-term stability remains a challenge. Ionic liquids have been used to improve stability and performance through film evolution and modifications of photophysical properties. This review discusses the reasons for instability, strategies for stability improvement, and challenges and prospects of perovskite solar cells.
Article
Chemistry, Physical
Yao Zhang, Chunyan Li, Enbing Bi, Tao Wang, Peng Zhang, Xudong Yang, Han Chen
Summary: By constructing a low-dimensional halide/perovskite heterostructure and molecular engineering of the organic spacer, the photovoltaic performance of inverted perovskite solar cells (PSCs) has been significantly improved with high efficiency and stability.
ADVANCED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Huibo Yan, Jincheng Huang, Xiaohui Zhang, Ming Wang, Jun Liu, Chunfeng Meng, Sunbin Deng, Lei Lu, Ping Xu, Hoi-Sing Kwok, Guijun Li
Summary: The use of an ionic liquid layer as a buried functional template for the growth of inorganic CsPb0.75Sn0.25I2Br perovskite absorber can suppress Sn2+ oxidation and enhance crystallinity, leading to improved efficiency of perovskite solar cells.
Article
Chemistry, Physical
Fei Wang, Kang Zhou, Xiao Liang, Xianfang Zhou, Dawei Duan, Chuangye Ge, Xintao Zhang, Yumeng Shi, Haoran Lin, Quanyao Zhu, Liang Li, Hanlin Hu, Hongyu Zhang
Summary: Ionic liquids (ILs) are used to manipulate crystallization kinetics, optimize morphology, and passivate defects in perovskite devices. This study introduces ILs with different anion sizes as additives for perovskite film formation. Small-sized anions effectively reduce defect density, suppress charge-carrier recombination, extend photoluminescence lifetime, and improve device performance.
Article
Chemistry, Physical
Guixiang Li, Zhenhuang Su, Meng Li, Feng Yang, Mahmoud H. Aldamasy, Jorge Pascual, Fengjiu Yang, Hairui Liu, Weiwei Zuo, Diego Di Girolamo, Zafar Iqbal, Giuseppe Nasti, Andre Dallmann, Xingyu Gao, Zhaokui Wang, Michael Saliba, Antonio Abate
Summary: The use of n-butylammonium acetate (BAAc) to modulate tin coordination in the crystallization process results in more compact and preferentially oriented perovskite films. Perovskite solar cells processed with BAAc show higher power conversion efficiency and improved stability, paving the way for controlled tin-based perovskite crystallization in lead-free photovoltaics.
ADVANCED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Yue Wang, Lingfeng Chao, Tingting Niu, Deli Li, Qi Wei, Hui Wu, Jian Qiu, Hui Lu, Chenxin Ran, Qi Zhong, Lin Song, Guichuan Xing, Yingdong Xia, Yonghua Chen, Peter Mueller-Buschbaum, Wei Huang
Summary: A novel strategy to enhance the performance and stability of organic halide perovskite solar cells by adding a small amount of the ionic liquid MA(+)DFA(-) is reported. The ionic liquid can anchor the organic cations via hydrogen bonding and improve the Pb-O interaction, leading to improved stability and superior photo carrier dynamics. Devices with high efficiency and excellent stability over 180 days in a nitrogen atmosphere at room temperature are achieved with the ionic liquid.
Article
Chemistry, Multidisciplinary
Xuejie Zhu, Minyong Du, Jiangshan Feng, Hui Wang, Zhuo Xu, Likun Wang, Shengnan Zuo, Chenyu Wang, Ziyu Wang, Cong Zhang, Xiaodong Ren, Shashank Priya, Dong Yang, Shengzhong (Frank) Liu
Summary: In this study, DMIMPF6 ionic liquid was used to passivate surface defects of perovskite, resulting in increased solar cell efficiency and enhanced long-term stability of the device.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Energy & Fuels
Huaxia Ban, Zhiguo Zhang, Letian Dai, Zhirong Liu, Haixuan Yu, Yan Shen, Xiao-Li Zhang, Jun Zhu, Mingkui Wang
Summary: In this study, the addition of low concentrations of an ionic liquid, 1-ethyl-3-methylimidazolium acetate (EMIMAc), was found to effectively control deep-level defects in CsSnI3 perovskites, leading to improved performance of the solar cells. Experimental observations and theoretical simulations showed that EMIMAc can interact with and attract the surface undercoordinated Sn2+ ions, reducing the density of deep-level defects and suppressing nonradiative recombination. As a result, the CsSnI3 perovskite solar cells achieved a high power conversion efficiency of 8.54%, making them the most efficient reported CsSnI3 mesoporous perovskite solar cells to date.
Article
Energy & Fuels
Mengqi Liu, Linrui Duan, T. Jesper Jacobsson, Jingshan Luo
Summary: Inorganic CsPbI3 perovskite solar cells show promise for tandem solar cells due to their excellent thermal stability and appropriate bandgap. The common method of using organic additives for intermediate phase engineering has been questioned regarding the full conversion to pure CsPbI3 phase. By studying the effect of annealing temperature, it is demonstrated that significant organic residues remain in the films when using the standard recipes of DMA(+)-assisted synthesis. However, increasing the annealing temperature to 340 degrees C eliminates the organic residues and leads to improved properties.
Article
Chemistry, Inorganic & Nuclear
Chuangjin Liu, Xueqing Xu, Zhenlin Zhang, Shuguang Cao, Jin Han, Yupeng Zheng, Zhuoneng Bi, Yanqing Zhu, Shizi Luo, Gang Xu, Shengzhong (Frank) Liu, Kai Wang, Zhiwei Ren, Gang Li, Qiting Deng, Jieling Liu
Summary: The research proposes a crystallization management strategy to enhance the quality of the active layer by utilizing fluorine-containing additives, specifically hexafluorobenzene (HFB). The introduction of HFB forms nano porous PbI2 films after evaporation, resulting in perovskite films with large grain size and low defect states. The PSCs with HFB-assisted perovskite films achieve a high power conversion efficiency of 23.01%.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Energy & Fuels
Shaoshen Lv, Weiyin Gao, Chenxin Ran, Deli Li, Lingfeng Chao, Xiaobo Wang, Lin Song, Zongqiong Lin, Li Fu, Yonghua Chen
Summary: Pb-based perovskite solar cells have shown potential in next-generation photovoltaics, and partial replacement of Pb with Sn reduces toxicity. A one-step antisolvent-free method using green solvent MAAC to fabricate high-quality Sn-Pb perovskite film achieves a champion PCE of 15.42%. Additionally, the device exhibits robust stability even after being stored in N-2 for 720 hours.
Article
Chemistry, Physical
Xuejie Zhu, Shaoan Yang, Yuexian Cao, Lianjie Duan, Minyong Du, Jiangshan Feng, Yuxiao Jiao, Xiao Jiang, Youming Sun, Hui Wang, Shengnan Zuo, Yucheng Liu, Shengzhong (Frank) Liu
Summary: A new approach using an ionic liquid was designed to improve the stability and performance of metal-halide perovskite solar cells. Experimental results showed that this method effectively enhances the photovoltaic performance while exhibiting outstanding stability characteristics.
ADVANCED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Chenhui Duan, Jinguo Cao, Zihui Liang, Yidong Ming, Jin Li, Li Zhao, Binghai Dong, Jing Li, Congcong Wu, Shimin Wang
Summary: This study investigates a new technology for electron transport layer-free perovskite solar cells, demonstrating high performance by incorporating EMIMPF6 ionic liquid. The new structure simplifies the cell design and achieves a conversion efficiency comparable to traditional cells.
Review
Chemistry, Multidisciplinary
Haixia Wu, Zheng Li, Fangyong Zhang, Chaoming Kang, Yuelong Li
Summary: This review paper focuses on the application and mechanism of ionic liquids (IL) in the field of perovskite solar cells (PSCs). By summarizing recent research progress, it highlights the potential of IL in improving the stability and efficiency of solar cells and discusses the future research trends of IL.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Engineering, Biomedical
Chuangli Zhang, Jiasheng Wu, Weimin Liu, Wenjun Zhang, Chun-Sing Lee, Pengfei Wang
Summary: The development of novel broad-spectrum sterilization is an efficient strategy to combat drug resistance and prevent the abuse of antibiotics in bacterial-infected diseases. Photothermal therapy (PTT) in the second near-infrared (NIR-II) therapeutic window has gained attention in antibacterial applications due to its increased tissue penetration and elevated maximal permissible exposure. However, the lack of bacterial-targeted photothermal agents hinders further development. In this study, we developed three xanthene derivatives (CNs) with intense light harvesting ability around 1180 nm, and CN3 exhibited good NIR-II photothermal and broad-spectrum sterilization against Gram-positive and Gram-negative bacteria.
ACTA BIOMATERIALIA
(2023)
Article
Chemistry, Multidisciplinary
Qunping Fan, Ruijie Ma, Zhaozhao Bi, Xunfan Liao, Baohua Wu, Sen Zhang, Wenyan Su, Jin Fang, Chao Zhao, Cenqi Yan, Kai Chen, Yuxiang Li, Chao Gao, Gang Li, Wei Ma
Summary: By combining selenophene-fused core with naphthalene-containing end-group, a near-infrared (NIR)-absorbing small-molecule acceptor (SMA) Y-SeNF is developed and incorporated into a binary PM6:L8-BO host system, resulting in improved charge-transporting and suppressed non-radiative energy loss in ternary polymer solar cells (PSCs). The ternary PSCs achieve an impressive device efficiency of 19.28% with high photovoltage and photocurrent, and exhibit excellent stability under maximum-power-point tracking for over 200 hours. This study provides a novel strategy for efficient and stable PSCs towards practical applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Wei Han, Xiaodong Zheng, Ke Yang, Chi Shing Tsang, Fangyuan Zheng, Lok Wing Wong, Ka Hei Lai, Tiefeng Yang, Qi Wei, Mingjie Li, Weng Fu Io, Feng Guo, Yuan Cai, Ning Wang, Jianhua Hao, Shu Ping Lau, Chun-Sing Lee, Thuc Hue Ly, Ming Yang, Jiong Zhao
Summary: Large-scale 2D beta-In2Se3 films and alpha-In2Se3 films were successfully grown by chemical vapor deposition, and a complete phase transition enabled the obtainment of a full spectrum of paraelectric, ferroelectric and antiferroelectric 2D films.
NATURE NANOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Song Xue, Jian Shang, Xiuhao Pu, Hao Cheng, Luojiang Zhang, Chenchen Wang, Chun-Sing Lee, Yongbing Tang
Summary: In this study, a dual anionic (N and Se) doping strategy was used to prepare Co9S8 (N,Se-Co9S8) as an anode material for sodium-ion batteries. The N doping increased the electron density of Co9S8, while the Se doping expanded the lattice spacing and lowered the Co-S binding energy. The synergistic combination of N and Se enabled Co9S8 to exhibit high conductivity, good Na+ affinity, and effective Na+ diffusion, resulting in fast reaction kinetics and stable performance during charging/discharging.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ruijie Ma, Qunping Fan, Top Archie Dela Pena, Baohua Wu, Heng Liu, Qiang Wu, Qi Wei, Jiaying Wu, Xinhui Lu, Mingjie Li, Wei Ma, Gang Li
Summary: All-polymer solar cells (All-PSCs) are considered the most promising candidate in achieving both efficient and stable organic photovoltaic devices. This study builds a ternary matrix with optimized morphology, improved film ductility, boosted efficiency, and better operational stability than its parental binary counterparts.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Jiehao Fu, Patrick W. K. Fong, Heng Liu, Chieh-Szu Huang, Xinhui Lu, Shirong Lu, Maged Abdelsamie, Tim Kodalle, Carolin M. Sutter-Fella, Yang Yang, Gang Li
Summary: The authors achieved the suppression of non-radiative recombination loss and improved the performance of organic solar cells by regulating the self-organization of bulk-heterojunction in a non-monotonic manner. The efficiency of the organic solar cells reached over 19% with a low non-radiative recombination loss of 0.168 eV.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Dongyang Li, Yulan Huang, Zhiwei Ren, Abbas Amini, Aleksandra B. Djurisic, Chun Cheng, Gang Li
Summary: In recent years, inverted perovskite solar cells (IPSCs) have gained significant attention for their low-temperature and cost-effective fabrication processes, hysteresis-free properties, excellent stability, and wide application. The efficiency gap between IPSCs and regular structures has narrowed down to less than 1%. Recent improvements in the efficiency of IPSCs, including interface engineering and novel film production techniques, are reviewed, along with tandem and integrated applications of IPSCs. Prospects for further development of IPSCs, such as the development of new materials, methods, and device structures, are discussed to meet the requirements of commercialization.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Letter
Chemistry, Physical
Guang Yang, Mengru Wang, Chengbin Fei, Hangyu Gu, Zhengshan J. Yu, Abdulwahab Alasfour, Zachary C. Holman, Jinsong Huang
Summary: Perovskite-silicon tandem cells have higher efficiency than single-junction cells, reducing the cost of photovoltaics. Silicon subcells in tandem cells can last longer due to the protection provided by perovskites. This study demonstrates the recycling of silicon bottom cells from end-of-life tandem cells, maintaining their optoelectronic properties and comparable efficiency to fresh cells.
ACS ENERGY LETTERS
(2023)
Article
Energy & Fuels
Shufang Li, Changzhou Shi, Xiaoyan Luo, Dongxu Li, Xinhui Lu, Yunbin Hu, Jun Yuan, Yingping Zou
Summary: A high-performance pseudo-bilayer heterojunction (PBHJ) organic solar cell with donor:acceptor (D:A) bilayer architecture is reported. The pseudo-bilayer films enable vertical distribution of cascaded components and large D/A interfaces for efficient exciton dissociation. The devices based on PM6:Y6 and PTQ10:Y6 exhibit high power conversion efficiencies of 17.73% and 17.81%, respectively.
Article
Chemistry, Physical
Jun Xu, Heng Tang, Shoufu Cao, Xiaoyi Chen, Zhao Chen, Yuanming Ma, Yan Zhang, Junwei Chen, Xiaoqing Lu, Chun-Sing Lee
Summary: In this study, few-layered 1T-MoSe2 nanosheets were used as a multifunctional interlayer and a catalytic current collector in Li-S batteries to enhance their performance and stability.
Review
Chemistry, Multidisciplinary
Ka-Wai Lee, Yingpeng Wan, Zhongming Huang, Qi Zhao, Shengliang Li, Chun-Sing Lee
Summary: This review summarizes the recent development of organic optoelectronic materials (OOMs) for biomedical applications, specifically in fluorescence imaging, photoacoustic imaging, photothermal therapy, and photodynamic therapy. The relationships between the molecular structures, nanoaggregation structures, photophysical mechanisms, and properties of OOMs for different biomedical applications are discussed. The review also highlights the challenges and future perspectives of OOMs for efficient biomedical applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Fangyuan Kang, Xin Wang, Cailing Chen, Chun-Sing Lee, Yu Han, Qichun Zhang
Summary: Developing diverse synthetic routes to prepare various crystalline covalent organic frameworks (COFs) and enriching the COFs family is crucial. In this research, the Kro''hnke oxidation method was used to construct two crystalline nitrone-linked COFs (CityU-1 and CityU-2) through the ingenious design of precursors and careful control of polymerization conditions. The as-obtained crystalline COFs were characterized and showed potential applications, such as high specific surface area and I-2 capture capacity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Tianqi Zhang, Fangqing Zhao, Pai Liu, Yangzhi Tan, Xiangtian Xiao, Zhaojin Wang, Weigao Wang, Dan Wu, Xiao Wei Sun, Jianhua Hao, Guichuan Xing, Kai Wang
Summary: The mechanism of electron leakage in green InP quantum-dot light-emitting diodes is revealed. An ultrathin LiF layer is introduced to modify the work function of indium tin oxide, which simultaneously hinders the electron leakage and enhances the hole injection.
ADVANCED PHOTONICS RESEARCH
(2023)
Article
Chemistry, Physical
Yina Zheng, Yao Wu, Zhihao Chen, Xinxin Xia, Yawen Li, Qiang Wu, Yuze Lin, Xinhui Lu, Xiaotao Hao, Jie Min
Summary: The device performance of polymer solar cells (PSCs) is closely related to the microstructure of the active layer. Using a conjugated-block copolymer (CBC) as the active layer, we compared its photovoltaic performance with that of the bulk heterojunction (BHJ) system. Although both systems show high device efficiencies, the contributions of relevant photovoltaic parameters are different. Our work demonstrates that CBC materials are promising for reducing the efficiency-stability gap of PSCs, compared to BHJ systems.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Shuo Shi, Yifan Si, Zihua Li, Shuo Meng, Shuai Zhang, Hanbai Wu, Chuanwei Zhi, Weng-Fu Io, Yang Ming, Dong Wang, Bin Fei, Haitao Huang, Jianhua Hao, Jinlian Hu
Summary: Developing intelligent wearable protection systems is highly important for human health engineering. In this study, an intelligent wearable filtration system (IWFS) was developed using advanced nanotechnology and machine learning. The IWFS exhibited high particle filtration efficiency, low pressure drop, and healthcare monitoring function, along with man-machine interactive capability.
